From mboxrd@z Thu Jan  1 00:00:00 1970
From: Cyril Hrubis <chrubis@suse.cz>
Date: Thu, 28 Jan 2021 16:50:02 +0100
Subject: [LTP] [PATCH v1 1/3] syscalls/mallinfo01: Add a basic test for
 mallinfo
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References: <1611654925-8994-1-git-send-email-xuyang2018.jy@cn.fujitsu.com>
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> diff --git a/testcases/kernel/syscalls/mallinfo/mallinfo01.c b/testcases/kernel/syscalls/mallinfo/mallinfo01.c
> new file mode 100644
> index 000000000..1a2a30af1
> --- /dev/null
> +++ b/testcases/kernel/syscalls/mallinfo/mallinfo01.c
> @@ -0,0 +1,84 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * Copyright (c) 2021 FUJITSU LIMITED. All rights reserved.
> + * Author: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
> + */
> +
> +/*\
> + * [DESCRIPTION]
> + *
> + * Basic mallinfo() test. Refer to glibc test
> + * https://sourceware.org/git/?p=glibc.git;a=blob;f=malloc/tst-mallinfo2.c
> +\*/
> +
> +#include <malloc.h>
> +
> +#include "tst_test.h"
> +#include "tst_safe_macros.h"
> +
> +#ifdef HAVE_MALLINFO
> +static char *buf;
> +static struct mallinfo info1;
> +
> +static void
> +print_mallinfo(const char *msg, struct mallinfo *m)
> +{
> +	tst_res(TINFO, "%s...", msg);
> +#define P(f) tst_res(TINFO, "%s: %d", #f, m->f)
> +	P(arena);
> +	P(ordblks);
> +	P(smblks);
> +	P(hblks);
> +	P(hblkhd);
> +	P(usmblks);
> +	P(fsmblks);
> +	P(uordblks);
> +	P(fordblks);
> +	P(keepcost);
> +}
> +
> +void test_mallinfo(void)
> +{
> +	struct mallinfo info2;
> +	int i;
> +	int total = 0;
> +
> +	for (i = 1; i < 20; i++) {
> +		buf = SAFE_MALLOC(160 * i);

The buf here has to be array and we have to free the buffers at the end
of this function, otherwise the malloc() will fail sooner or later when
the test_mallinfo() function runs in a loop.

> +		total += 16 * i;
> +	}
> +
> +	info2 = mallinfo();
> +	print_mallinfo("Test", &info2);
> +	if (info2.uordblks > info1.uordblks + total)
> +		tst_res(TPASS, "mallinfo() passed");
> +	else
> +		tst_res(TFAIL, "mallinfo() failed");
> +
> +	info1 = info2;

And then we cannot do this either.

> +}
> +
> +static void setup(void)
> +{
> +	if (sizeof(info1.arena) != sizeof(int))
> +		tst_res(TFAIL, "The member of mallinfo struct is not int");
> +
> +	info1 = mallinfo();
> +	print_mallinfo("Start", &info1);
> +}
> +
> +static void cleanup(void)
> +{
> +	if (buf)
> +		free(buf);
> +}
> +
> +static struct tst_test test = {
> +	.setup = setup,
> +	.test_all = test_mallinfo,
> +	.cleanup = cleanup,
> +};
> +
> +#else
> +TST_TEST_TCONF("system doesn't implement non-POSIX mallinfo()");
> +#endif
> -- 
> 2.23.0
> 
> 
> 
> 
> -- 
> Mailing list info: https://lists.linux.it/listinfo/ltp

-- 
Cyril Hrubis
chrubis@suse.cz